May 1957 - December 1957
The Board of the Electrotechnische Vereeniging of {period} has been constituted as follows:
| L.P.H.M. Korting | President |
| W.R.P. de Jonge | Secretaris |
| G.G. Sipkes | Thesaurier |
| A.O. Schaap | Vice-President |
| A.N. Verveen | Commissaris |
May 1957 - December 1957
The Board of the Electrotechnische Vereeniging of {period} has been constituted as follows:
| L.P.H.M. Korting | President |
| W.R.P. de Jonge | Secretaris |
| G.G. Sipkes | Thesaurier |
| A.O. Schaap | Vice-President |
| A.N. Verveen | Commissaris |